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Semi centrifugal casting

Forming process where parts with axial symmetry is cast in a rotating mold for achieving a good fill and reduce defects.

Beskrivning
Illustration of Semi centrifugal casting

The process

A mold [1] with axial symmetry rotated at high speed while the melt is supplied through an opening located in the mold vertical rotation axis. The rotation creates centrifugal forces causing the melt to push out toward the periphery of the mold. The centrifugal force allows gas bubbles and contamination to be pushed to the central axis due to the differences in density.

Therefore the radial compressive force achieve greater density in the part's periphery and lower around the center where the defects accumulate. This accumulation is often removed by removing the finished part's center.